Stamp check

This stamp is genuine.

Issued by Stellair for the offer below. A genuine stamp always opens on offerhub.stellair.ai.

No. SV-7588-E81D
Certificate of verification

Stellair Verified

Stellair certifies that this offer’s terms were confirmed with Delta.

DeltaWaldorf Astoria Costa Rica room upgrade and creditReceive a free upgrade · Until Nov 30, 2026
What was checked
  1. Terms checked on the brand’s own pagewww.delta.com/us/en/delta-vacations/offers-deals
  2. Not yet tested by peopleIt’s checked the way a shopper would the next time it changes.
VALID
IssuedNov 4, 2026Terms checked on the brand's own page
Verified byStellair Verificationofferhub.stellair.ai

Covers this version of the offer. If the brand changes anything a shopper relies on, it’s checked again and gets a new number. The brand’s own site is the final word on terms.

Get it at delta.com See the offer